Volume 41 Number 1 Article 9 Pages: 31-39
Year 1987 Month 1
Title: Growth and Production off 'Starkspur Supreme Delicious' on 9 Rootstocks in the NC-140 Cooperative Planting
Author: NC-140
Citation
Abstract:
In 1980-81 'Starkspur Supreme Delicious' on 9
rootstocks were planted at 27 sites in the United
States and Canada according to guidelines established for cooperative testing by NC-140.
The greatest tree loss occurred with Ottawa 3
(30%) followed by M.27 EMLA (22.8%), M.9
EMLA (20.0%) and MAC 24 (15.6%) with less
than 10% death of trees on other rootstocks.
Trees on M.27 EMLA were the smallest and
trees on MAC 24 the largest.
Trees on M.9
EMLA, M.9 and MAC 9 were not significantly
different in trunk cross-sectional area.
Trees on
MAC 9 had high early yields and yield efficiency
and trees on MAC 24 and OAR 1 were relatively
slow to begin production in most sites.
In
addition to growth and yield measurements,
other pomological characteristics influenced by
the rootstocks were evaluated and reported.
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